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Biofuel breakthroughs bring ‘negative emissions’ a step closer
The use of biofuels helps reduce human greenhouse gas emissions. That’s one reason why some petroleu...
Commuting by subway? What you need to know about air quality
Four more major Indian cities will soon have their own metro lines, the country’s government has ann...
Has the EU really solved its refugee crisis?
Less than two years after the European Union was confronted with an unprecedented influx of refugees...